MAGNETIC PROPERTIES OF TYPE II SUPERCONDUCTORS AT LOW TEMPERATURE
DAI Wenmin Beijing University of Iron and Steel Technology
Cite this article:
DAI Wenmin Beijing University of Iron and Steel Technology. MAGNETIC PROPERTIES OF TYPE II SUPERCONDUCTORS AT LOW TEMPERATURE. Acta Metall Sin, 1985, 21(4): 45-56.
Abstract The penetration depth λ(T),coherent length ξ(T),high critical field H_(c2)(T)andcoefficients k_1(T)and k_2(T)of the type II superconductors at low temperature werecalculated by the generalized G-L equations.An expression of the structure of avortex line at low temperature was derived.The lower critical field H_(c1)(T)was eval-uated by some simplified assumptions.The effect of the impurities on λ,ξ,k_1,k_2and H_(c1)was also discussed.After the calculation,it shows that the Werthamer'sand Wang's equations are no longer valid while the applied field H_0 approachesto H_(c2)(T)at low temperature.
